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The Statistic (The charts (Bar charts (Compound bar charts (They display…
The Statistic
The charts
Bar charts
They are used to discrete data. They can be horizontal or vertical
Compound bar charts
They display two or more set of data
Line graph
It's used to rappresent a data changes with time
Pictograms
They are a fairly simple charts. They must have a "key"
Pie chart
It's a circular chart. It rappresents a fraction
Data
Numerical data
Quantitative data
It's data in number form
They are divided into two groups
Discrete data
Data can only take certain values
Continuous data
Data could take any values between two given values
Categorical data
It's a non-numerical data
Qualitative data
From sources
Secondary data
Primary data
Talling
Tallies are little marks
Frequency table (it shows the totals of the tally marks)
Mean
Median (it's a middle term in a data set)
Mode(it's the value that occurs with the hightest frequency in a data set
